1.3 Valvate flower

Flower parts

Anther: pollen-bearing portion of the stamen Beak: the pointed, end projection of a fruit Bract: a leaf- or stem-like structure at the base of a flower or inflorescence Capillary bristle: slender, hair-like bristles; often attached to the achenes of Asteraceae flowers Corolla: collection of flower petals Corona: crown-like structures on the petals of Asclepias species Disk flowers: small tubular flowers of Asteraceae Hypanthium: a cup-shaped extension of the flowers formed by the fused, lower parts of the corolla and calyx Involucre: bracts located below inflorescences of Asteraceae Pappus: awns, scales, or bristles at the base of Asteraceae flowers and the apex of achenes Peduncle/Pedicil (pedunculate/pedicellate): the stalk or stem of a single flower or an inflorescence Pistil: female reproductive parts Pistillate: flowers bearing pistils, lacking stamens Ray flowers: narrow, petal-like composite flowers, often surrounding disk flowers Receptacle: the part of the Asteraceae peduncle Valvate Flower where the flowers of the head are borne Scale: thin, dry, membranous structure Sepal: a segment of the calyx (outer whorl of a flower) Stamen: male reproductive parts Staminate: flowers bearing stamens but not pistils Tepal: an undifferentiated flower segment Figure 1.3 Valve: segments of a fruit that separate from each other Valvate: opening by valves, like the fruit of Rumex species